The Klipsch R-121SW is rated 3.6/5 for sound quality, #132 of 212 Medium Home Subwoofers (30-75 lbs). See all Subwoofers rankings for every top pick.
Prices on this page were last checked October 28, 2026 at 1:06 AM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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Brand: Klipsch
#132 Klipsch R-121SW: $449.99 Amazon $449.99 eBay
Older models: the Klipsch Reference R-120SW (ranked lower, rated 3.4/5) and the Klipsch R-12SW (ranked lower, rated 3.3/5). See every Klipsch Reference subwoofers generation.
Same family: the Klipsch Reference R-101SW (smaller subwoofer, ranked lower, estimated 3.2/5).
Pros: A 12 inch front-firing subwoofer with Klipsch’s copper colored woofer, an affordable pick for home theater. It has a 12-inch spun-copper driver and a 200W RMS amplifier, and measured output averages 111.2dB from 40 to 80Hz. The rated response is 28 to 120Hz, and the front-firing design makes placement easier.
Cons: Output drops to 98.4dB at 25Hz and 96.0dB at 20Hz, so the deepest film effects will be weak in a large room. The port is on the rear, so it needs some clearance behind it. It weighs 15.9 kg in a 422 x 406 x 500 mm cabinet, and it has no room correction or app control.
| Released | Jul 2022 (4 years ago) |
|---|---|
| Amplifier Power | 200W RMS |
| CEA-2010-A Average (40-80Hz) | 111.2 dB |
| Cabinet Color | black |
| Country | United States |
| Dimensions | 16.6”H x 16”W x 19.7”D (421.6 x 406.4 x 500.4 mm) |
| Drivers | 12” (305mm) driver |
| Enclosure | ported, rear |
| Frequency Response | 28-120Hz |
| Measurement Source | Audioholics |
| Output SPL at 15 Hz | 90.7 dB |
| Output SPL at 20 Hz | 96.0 dB |
| Output SPL at 25 Hz | 98.4 dB |
| Output SPL at 31.5 Hz | 102.3 dB |
| Output SPL at 40 Hz | 108.2 dB |
| Output SPL at 50 Hz | 112.4 dB |
| Output SPL at 63 Hz | 112.9 dB |
| Output SPL at 80 Hz | 111.3 dB |
| Output SPL at 100 Hz | 109.9 dB |
| Output SPL at 125 Hz | 108.3 dB |
| Warranty | 5/2 |
| Weight | 35.1 lbs (15.9 kg) |
Price history
$449.99 is 81 percent above its typical $249 over the last three months, and it has been as low as $249 (Aug 2026). It may be worth waiting for a sale.
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- Reviews, Comparisons and Sound Samples
- Independently measured by Audioholics; the published figures above come from this ASR subwoofer measurement thread.
Head-to-Head Comparisons
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